A conical glass rod spindle locking structure

Abstract

The present invention relates to the technical field of spindle locking devices, and discloses a cone-shaped glass rod spindle locking structure, which is applied to a cone-shaped glass rod having a cone surface and a transition inclined surface, wherein the transition inclined surface intersects with the large end of the cone surface; the cone-shaped glass rod spindle locking structure comprises: an inner cone sleeve, the inner cone sleeve is sleeved with the cone surface on the cone-shaped glass rod, the front end of the inner cone sleeve is opposite to the transition inclined surface on the cone-shaped glass rod, the front end of the inner cone sleeve is provided with an open groove, and the groove wall of the open groove is provided with an internal thread; an O-ring, the O-ring is sleeved on the transition inclined surface of the cone-shaped glass rod and abuts against the groove bottom surface of the open groove; a nut, the nut is threadedly connected to the open groove, and the O-ring is restricted to be closely attached to the transition inclined surface of the cone-shaped glass rod. In the above manner, the present invention can restrict the O-ring to be closely attached to the cone-shaped glass rod through the threaded connection between the nut and the inner cone sleeve, thereby ensuring the close fit between the inner cone sleeve and the cone-shaped glass rod.

Description

Technical Field

[0001] The invention relates to the technical field of spindle locking devices, in particular to a cone-shaped glass rod spindle locking structure. Background Art

[0002] The existing conical glass rod is rotated by the inner conical sleeve, and the square spring ring in the recessed groove at the end of the inner conical sleeve clamps the outer surface of the conical glass rod for frictional driving. Since the square spring ring in the recessed groove of the inner conical sleeve and the conical glass rod have a high difficulty in matching the taper size, and the matching contact between the two is a line contact, the matching is often poor, causing the conical glass rod and the inner conical sleeve to slip relative to each other, resulting in the phenomenon of not being able to rotate synchronously. Summary of the invention

[0003] The main technical problem solved by the present invention is to provide a conical glass rod spindle locking structure, which can limit the O-ring to be tightly attached to the conical glass rod through the threaded connection between the nut and the inner conical sleeve, thereby ensuring the close fit between the inner conical sleeve and the conical glass rod.

[0004] In order to solve the above technical problems, a technical solution adopted by the present invention is: to provide a conical glass rod spindle locking structure, which is applied to a conical glass rod having a conical surface and a transition inclined surface, wherein the transition inclined surface intersects with the large end of the conical surface, and the conical glass rod spindle locking structure comprises:

[0005] An inner cone sleeve, wherein the inner cone sleeve is sleeved with the cone surface on the cone-shaped glass rod, the front end of the inner cone sleeve is opposite to the transition inclined surface on the cone-shaped glass rod, the front end of the inner cone sleeve is provided with an open groove, and the groove wall of the open groove is provided with an internal thread;

[0006] An O-ring, the O-ring is fitted on the transition inclined surface of the conical glass rod and abuts against the bottom surface of the open groove;

[0007] A nut is threadedly connected with the open groove on the inner cone sleeve to restrict the O-ring to be closely attached to the transition inclined surface of the cone-shaped glass rod.

[0008] Preferably, the nut includes an annular connecting portion and an annular step portion, the outer diameter of the annular step portion is larger than the outer diameter of the annular connecting portion, an outer side wall of the annular connecting portion is provided with an external thread matching the internal thread, the annular connecting portion is threadedly connected to the front end portion of the inner tapered sleeve, and the annular step portion can be against the front end surface of the inner tapered sleeve.

[0009] Preferably, the bottom of the open groove is flush with the intersection line of the transition inclined surface and the conical surface. This structural design can achieve the best tight fit between the inner conical sleeve and the conical glass rod.

[0010] Preferably, an annular groove is provided on the inner side wall of the inner cone sleeve, and the annular groove separates the inner side wall of the inner cone sleeve to form a first matching portion and a second matching portion, the first matching portion corresponds to the large end of the cone surface, and the second matching portion corresponds to the small end of the cone surface; so as to ensure a close fit between the inner cone sleeve and the conical glass rod and ensure coaxiality during rotation.

[0011] Preferably, an annular protrusion is provided on the outer side wall of the front end of the inner tapered sleeve to ensure the structural strength of the front end of the inner tapered sleeve, and to improve the limiting effect on the annular step portion on the nut, and at the same time can serve as a preliminary positioning for fixing parts such as bearings on the inner tapered sleeve.

[0012] Preferably, a clamping ring is provided on the outer wall of the rear end of the inner cone sleeve for cooperating with the annular protrusion to fix and limit the position of the parts on the inner cone sleeve, and the outer wall of the rear end of the inner cone sleeve also has a positioning groove for fixing the clamping ring; a fixing hole is also opened on the outer wall of the inner cone sleeve.

[0013] The beneficial effect of the present invention is that the present invention can not only restrict the O-ring from being closely attached to the conical glass rod through the threaded connection between the nut and the inner conical sleeve, but also ensure the close fit between the inner conical sleeve and the conical glass rod, thereby realizing the locking connection between the inner conical sleeve and the conical glass rod. The structural design of the annular step portion on the nut can prevent the O-ring from being excessively squeezed and damaged. The structural design is simple and reasonable, and the movement performance is reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a cross-sectional structural schematic diagram of a preferred embodiment of a conical glass rod spindle locking structure of the present invention;

[0015] Figure 2 It is a structural schematic diagram of a tapered glass rod in a tapered glass rod spindle locking structure of the present invention;

[0016] Figure 3 It is a three-dimensional structural schematic diagram of an inner cone sleeve in a cone-shaped glass rod spindle locking structure of the present invention;

[0017] Figure 4 It is a schematic cross-sectional view of an inner cone sleeve in a cone-shaped glass rod spindle locking structure of the present invention;

[0018] Figure 5 The present invention is a three-dimensional structural schematic diagram of a nut in a conical glass rod main shaft locking structure.

[0019] The components in the accompanying drawings are marked as follows: 1. conical glass rod; 11. conical surface; 12. transition inclined surface; 2. inner conical sleeve; 21. first matching portion; 22. second matching portion; 23. open groove; 24. annular protrusion; 25. positioning slot; 26. fixing hole; 3. O-ring; 4. nut; 41. annular connecting portion; 42. annular step portion. DETAILED DESCRIPTION

[0020] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0021] See also Figures 1 to 5 , the embodiment of the present invention includes:

[0022] A conical glass rod spindle locking structure is applied to a conical glass rod 1 having a conical surface 11 and a transition inclined surface 12, wherein the transition inclined surface 12 intersects with the large end of the conical surface 11. The conical glass rod 1 spindle locking structure comprises: an inner conical sleeve 2 which is fitted on the conical glass rod 1, and a nut 4 which is threadedly connected with the inner conical sleeve 2 to restrict an O-ring 3 from being tightly attached to the conical glass rod 1.

[0023] The inner cone sleeve 2 is matched with the conical surface 11 on the conical glass rod 1, and the taper of the inner side wall of the inner cone sleeve 2 in contact with the conical surface 11 is consistent with the taper of the conical surface 11. An annular groove is provided on the inner side wall of the inner cone sleeve 2, and the annular groove separates the inner side wall of the inner cone sleeve 2 to form a first matching portion 21 and a second matching portion 22. The first matching portion 21 matches with the small end of the conical surface 11, and the second matching portion 22 matches with the large end of the conical surface 11, so as to ensure the close matching of the inner cone sleeve 2 and the conical glass rod 1 and ensure the coaxiality during rotation. The end of the inner cone sleeve 2 connected to the nut 4 is the front end of the inner cone sleeve 2. The front end of the inner cone sleeve 2 is opposite to the transition inclined surface 12 on the conical glass rod 1. The front end of the inner cone sleeve 2 is provided with an open groove 23. The bottom of the open groove 23 is flush with the intersection line of the transition inclined surface 12 and the cone surface 11. The groove wall of the open groove 23 is provided with an internal thread. An annular protrusion 24 is provided on the outer wall of the front end of the inner cone sleeve 2 to ensure the structural strength of the front end of the inner cone sleeve 2 after the open groove 23 is provided, and to improve the limiting effect of the annular step 42 on the nut 4. At the same time, it can be used as a preliminary positioning of the bearing, gear and other parts fixedly sleeved on the inner cone sleeve 2. A positioning groove 25 is also provided on the outer wall of the rear end of the inner cone sleeve 2. A clamping ring is provided in the positioning groove 25 to facilitate the positioning of the bearing and other parts on the inner cone sleeve 2 in cooperation with the annular protrusion 24. A fixing hole 26 is also provided on the outer side wall of the inner cone sleeve 2 so as to be fixedly connected with the gear on the inner cone sleeve 2 via a pin for circumferential fixation.

[0024] The O-ring 3 is sleeved on the transition inclined surface 12 of the tapered glass rod 1 and is located at the top of the transition inclined surface 12 , that is, close to the bottom of the open groove 23 , so as to be able to abut against the bottom surface of the open groove 23 .

[0025] The nut 4 includes an annular connecting portion 41 and an annular step portion 42. The outer diameter of the annular step portion 42 is larger than the outer diameter of the annular connecting portion 41. The outer side wall of the annular connecting portion 41 is provided with an external thread matching the internal thread. The annular connecting portion 41 is threadedly connected to the open groove 23 at the front end of the inner tapered sleeve 2. The annular step portion 42 can be against the front end surface of the inner tapered sleeve 2. The annular step portion 42 can prevent the annular connecting portion 41 from being screwed into the open groove 23 in a transitional manner, thereby avoiding damage to the O-ring 3 due to transitional extrusion.

[0026] When the nut 4 is gradually rotated and locked, the annular connecting portion 41 of the nut 4 can gradually flatten the O-ring 3 made of silicone material until the annular step portion 42 of the nut 4 is against the front end surface of the inner cone sleeve 2, and the O-ring 3 is just completely in close contact with the transition inclined surface 12 of the conical glass rod 1, and the inner cone sleeve 2 and the conical glass rod 1 are locked and can rotate synchronously.

[0027] The present invention not only limits the O-ring 3 to be closely attached to the conical glass rod 1, but also ensures the close fit between the conical sleeve 2 and the conical glass rod 1 through the threaded connection between the nut 4 and the inner conical sleeve 2, thereby realizing the locking connection between the inner conical sleeve 2 and the conical glass rod 1. The structural design is simple and reasonable, and the movement performance is reliable.

[0028] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A conical glass rod spindle locking structure, applied to a conical glass rod having a conical surface and a transition inclined surface, wherein the transition inclined surface intersects with the large end of the conical surface, characterized in that: The conical glass rod main shaft locking structure comprises: An inner cone sleeve, wherein the inner cone sleeve is sleeved with the cone surface on the cone-shaped glass rod, the front end of the inner cone sleeve is opposite to the transition inclined surface on the cone-shaped glass rod, the front end of the inner cone sleeve is provided with an open groove, and the groove wall of the open groove is provided with an internal thread; An O-ring, the O-ring is fitted on the transition inclined surface of the conical glass rod and abuts against the bottom surface of the open groove; A nut is threadedly connected with the open groove on the inner cone sleeve to restrict the O-ring to be closely attached to the transition inclined surface of the cone-shaped glass rod.

2. The tapered glass rod spindle locking structure according to claim 1, characterized in that: The nut includes an annular connecting portion and an annular step portion, the outer diameter of the annular step portion is larger than the outer diameter of the annular connecting portion, an outer side wall of the annular connecting portion is provided with an external thread matching the internal thread, the annular connecting portion is threadedly connected to the front end portion of the inner tapered sleeve, and the annular step portion can be against the front end surface of the inner tapered sleeve.

3. The tapered glass rod spindle locking structure according to claim 1, characterized in that: The bottom of the open groove is flush with the intersection line of the transition inclined surface and the tapered surface.

4. The tapered glass rod spindle locking structure according to claim 1, characterized in that: An annular groove is provided on the inner side wall of the inner cone sleeve, and the annular groove separates the inner side wall of the inner cone sleeve to form a first matching portion and a second matching portion, wherein the first matching portion matches with the large end of the cone surface, and the second matching portion matches with the small end of the cone surface.

5. A tapered glass rod spindle locking structure according to claim 1, 2, 3 or 4, characterized in that: An annular protrusion is arranged on the outer side wall of the front end of the inner cone sleeve.

6. A tapered glass rod spindle locking structure according to claim 5, characterized in that: A clamping ring is provided on the outer wall of the rear end of the inner cone sleeve for cooperating with the annular protrusion to fix and limit the position of the parts on the inner cone sleeve. The outer wall of the rear end of the inner cone sleeve also has a positioning groove for fixing the clamping ring; a fixing hole is also opened on the outer wall of the inner cone sleeve.

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